• Damage Evolution In Ballistic Impact Of Glass Plates 

    Bless, S. J.; Russell, R.; Berry, D. T.; Levinson, S. (2009-12)
    High-velocity impact onto a layered glass target produces a very extensive damage pattern exhibiting many distinct morphologies. High-speed photography reveals failure waves and cracks that move at acoustic velocities. ...
  • Laser-Induced Spall Of Aluminum And Aluminum Alloys At High Strain Rates 

    Dalton, D. A.; Brewer, J.; Bernstein, A. C.; Grigsby, W.; Milathianaki, D.; Jackson, E.; Adams, R.; Rambo, P.; Schwarz, J.; Edens, A.; Geissel, M.; Smith, I.; Taleff, E.; Ditmire, T. (2007-12)
    We conducted laser-induced spall experiments aimed at studying how a material's microstructure affects the tensile fracture characteristics at high strain rates (> 10(6) s(-1)). We used the Z-Beamlet Laser at Sandia National ...
  • Nanoindentation Of Si Nanostructures: Buckling And Friction At Nanoscales 

    Huang, H.; Li, B.; Zhao, Q.; Luo, Z. Q.; Im, J.; Kang, M. K.; Allen, R. A.; Cresswell, M. W.; Huang, R.; Ho, P. S. (2009-11)
    A nanoindentation system was employed to characterize mechanical properties of silicon nanolines (SiNLs), which were fabricated by an anisotropic wet etching (AWE) process. The SiNLs had the linewidth ranging from 24 nm ...
  • Spall And Dynamic Yielding Of Aluminum And Aluminum Alloys At Strain Rates Of 3X10(6) S(-1) 

    Dalton, D. A.; Worthington, D. L.; Sherek, P. A.; Pedrazas, N. A.; Bernstein, A. C.; Quevedo, H. J.; Rambo, P.; Schwarz, J.; Edens, A.; Geissel, M.; Smith, I. C.; Taleff, E. M.; Ditmire, T. (2009-12)
    We have explored the role that grain size, impurity particles and alloying in aluminum play in dynamic yielding and spall fracture at tensile strain rates of similar to 3x10(6) We achieved these strain rates shocking the ...
  • Strategies to reduce terminal water consumption of hydraulic fracture stimulation in the Barnett Shale 

    Harold, Jennifer Marie Secor (2009-08)
    Horizontal drilling and hydraulic fracture stimulation have enabled the economic development of unconventional resource plays. An average horizontal well in the Barnett Shale requires 3 to 4 million gallons of fresh water, ...